I'm in the process of setting up a T1 point to point connection between an office and colo facility. There are Cisco 2801 routers on both ends. I'm not getting a carrier detect light. I was thinking perhaps a circuit issue, a clocking issue, or some other issue with how I've set up the routers.
However, I noticed that if I jiggle (heh) the cable going into the serial interface, the CD light turns green, and the alarm light goes off. The router then reports the controller and serial interface as up. If I jiggle it again, the connection immediately goes down. (So it does appear that the motion is causing this, and it's not randomly/intermittantly going up and down).
Our wiring folks were onsite, and they remade the end of the cable, and tried rolling it as well, with no luck. They say they feel confident it is not a cabling issue as far as what they've done (extending from the circuit to the router).
Is it possible the port on this WIC is bad? Or could there be another explanation?
It's actually a dual WIC, though I only need one port. I wanted to try testing the other port, but only one serial interface is showing in the config. Is that normal? Maybe I'm forgetting, but I don't remember having to manually create the 2 serial interfaces on my other router's dual WIC. How can I get that second port to show up?
Config (I'm still working on this and don't have routes set up yet...)
RTR# show config Using 1164 out of 196600 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname RTR9 ! boot-start-marker boot system flash flash:/c2801-ipbasek9-mz.124-16a.bin boot system flash flash:/c2801-ipbase-mz.124-16a.bin boot-end-marker ! card type t1 0 3 logging buffered 51200 warnings enable secret 5 $1$vfgj$EhsdEQp4UhwZDCDW6ytoJ0 ! no aaa new-model no network-clock-participate wic 3 no ip routing no ip cef ! ! ! ! ip domain name domain.net ! ! ! ! ! controller T1 0/3/0 framing esf linecode b8zs channel-group 0 timeslots 1-24 ! controller T1 0/3/1 framing esf linecode b8zs ! ! ! interface FastEthernet0/0 ip address 192.168.75.1 255.255.255.252 no ip route-cache duplex auto speed auto no mop enabled ! interface FastEthernet0/1 no ip address no ip route-cache shutdown duplex auto speed auto ! interface Serial0/3/0:0 ip unnumbered FastEthernet0/0 encapsulation ppp ! ! no ip http server no ip http secure-server ! ! control-plane ! disable-eadi ! line con 0 line aux 0 line vty 0 4 privilege level 15 login transport input ssh ! scheduler allocate 20000 1000 end